[Bug]: Inconsistent type of OperationStatusResult.percentComplete

[Alancere]

Describe the bug

go sdk two different results:

Reproduction

tsp: https://github.com/Azure/typespec-azure/blob/main/packages/typespec-azure-resource-manager/lib/common-types/types.tsp#L220

spec common-type: https://github.com/Azure/azure-rest-api-specs/blob/main/specification/common-types/resource-management/v3/types.json#L439

Checklist

• Follow our Code of Conduct
• Check that this issue is about the Azure libraries for typespec. For bug in the typespec language or core libraries file it in the TypeSpec repo
• Check that there isn't already an issue that request the same bug to avoid creating a duplicate.
• The provided reproduction is a minimal reproducible example of the bug.

[tadelesh]

cc: @allenjzhang

[allenjzhang]

Per ARM RPC guide line, it would be float64 (double). https://github.com/Azure/azure-resource-manager-rpc/blob/8231d7df51aec87e6ccb5bcc04478136758b0a4c/v1.0/async-api-reference.md?plain=1#L164